Solution : https://service.sap.com/sap/support/notes/1479474 (SAP Service marketplace login required)
Key words :
function module ac_document_create, payment item, accounting interface, tax amounts, duplicate entries, terms idoc, tax reason, tax bypass, table tax_appli, reference transaction
Related Notes :
| 1525005 | Create missing entries in ETXDC* tables |
| 1524351 | Corrections supporting note 1525005 |
| 1241247 | BAPI does not update External Tax System |